Simple categories matching transportable:

• medium,
• commodity,
• building,

Members with property transportable:

• carpet,
• cd_rom,
• movable_bungalow,
• office,
• diamond,
• key,
• token,
• school_classroom,
• smart_card,
• tape,
• chalet,
• gem,
• compact_disk,
• construction,
• diskette,
• card,